NEARLY-2ND-ORDER NEMATIC-ISOTROPIC PHASE-TRANSITION IN A CYCLIC THERMOTROPIC LIQUID-CRYSTAL

被引：25

作者：

LI, JF ^{[1
]}

PERCEC, V ^{[1
]}

ROSENBLATT, C ^{[1
]}

机构：

[1] CASE WESTERN RESERVE UNIV,DEPT MACROMOLEC SCI,CLEVELAND,OH 44106

来源：

PHYSICAL REVIEW E | 1993年 / 48卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.48.R1

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Kerr measurements are reported for a cyclic trimeric liquid crystal above the uniaxial nematic-isotropic phase transition temperature T(NI). The inverse of the order-parameter susceptibility is found to be linear in temperature, such that the quantity T(NI)-T* is less than 200 mK, where T* is the super-cooling limit of the isotropic phase. Well below T(NI) we observe textures consistent with a biaxial nematic phase.

引用

页码：R1 / R4

页数：4

共 17 条

[1] PHASE-TRANSITIONS IN A FLUID OF BIAXIAL PARTICLES [J].

ALBEN, R .

PHYSICAL REVIEW LETTERS, 1973, 30 (17) :778-781

[2] CRITICAL-BEHAVIOR OF UNIAXIAL BIAXIAL NEMATIC PHASE-TRANSITIONS IN AMPHIPHILIC SYSTEMS [J].

BOONBRAHM, P ;

SAUPE, A .

JOURNAL OF CHEMICAL PHYSICS, 1984, 81 (04) :2076-2081

[3] BIAXIAL NEMATICS [J].

GALERNE, Y .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1988, 165 :131-149

[4]

KAWASUMI M, 1992, THESIS CASE W RESERV

[5]

LEGUILLOU JC, 1985, J PHYS-PARIS, V46, pL141

[6] CRITICAL PROPERTIES OF THE UNIAXIAL BIAXIAL TRANSITION IN MICELLAR NEMATIC PHASES [J].

MELNIK, G ;

PHOTINOS, P ;

SAUPE, A .

JOURNAL OF CHEMICAL PHYSICS, 1988, 88 (06) :4046-4051

[7] LANDAU POINT ON A NEMATIC-ISOTROPIC TRANSITION LINE [J].

MELNIK, G ;

PHOTINOS, P ;

SAUPE, A .

PHYSICAL REVIEW A, 1989, 39 (03) :1597-1600

[8] TRANSFORMATION OF A KINETICALLY PROHIBITED MESOPHASE OF A LINEAR POLYMER INTO A ENANTIOTROPIC MESOPHASE VIA CYCLIZATION [J].

PERCEC, V ;

KAWASUMI, M .

ADVANCED MATERIALS, 1992, 4 (09) :572-576

[9] TRANSFORMATION OF A KINETICALLY CONTROLLED NEMATIC PHASE OF A LINEAR POLYMER INTO ONE WHICH IS THERMODYNAMICALLY CONTROLLED VIA CYCLIZATION [J].

PERCEC, V ;

KAWASUMI, M .

LIQUID CRYSTALS, 1993, 13 (01) :83-94

[10] LIQUID-CRYSTALLINE POLYETHERS BASED ON CONFORMATIONAL ISOMERISM .24. SYNTHESIS AND CHARACTERIZATION OF CYCLIC LIQUID-CRYSTALLINE OLIGOMERS BASED ON 1-(4-HYDROXY-4'-BIPHENYLYL)-2-(4-HYDROXYPHENYL)BUTANE AND 1,10-DIBROMODECANE [J].

PERCEC, V ;

KAWASUMI, M ;

RINALDI, PL ;

LITMAN, VE .

MACROMOLECULES, 1992, 25 (15) :3851-3861

← 1 2 →